ios,regex,swift , Regular expression to get url in string swift


Regular expression to get url in string swift

Question:

Tag: ios,regex,swift

I try to get urls in text. So befor I used such expression

let re = NSRegularExpression(pattern: "https?:\\/.*", options: nil, error: nil)!

But I had a problem, when user input urls with Capitalized symbols like it doesn't match it ( I tried

let re = NSRegularExpression(pattern: "(h|H)(t|T)(t|T)(p|P)s?:\\/.*", options: nil, error: nil)!

But nothing happend.


Answer:

You turn off case sensitivity using an i inline flag in regex:

(?i)https?:\\/.*

See Foundation Framework Reference for more information on available regex features.

(?ismwx-ismwx)
Flag settings. Change the flag settings. Changes apply to the portion of the pattern following the setting. For example, (?i) changes to a case insensitive match.The flags are defined in Flag Options.


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